# QbitAI — Claude最强Fable 5.1发布！8项屠榜，最高降价45%，反蒸馏机制上线

- Company: QbitAI (qbitai.com)
- Announced: 2026-09-02T02:18:12+00:00
- Category: model-update
- Coverage: not counted
- Announcement: yes
- Group: models
- Source: https://www.qbitai.com/2026/09/482652.html
- Record: https://forck.live/items/7305-claude-fable-5-1-8-45
- Title in English (translated by forck.live from zh): Claude's strongest Fable 5.1 released! Eight benchmark top rankings, up to 45% price reduction, anti-distillation mechanism launched
- Subject: Reporting
- Models affected: Fable 5.1, Mythos 5.1
- Pricing: 缓存读取价格降至每百万token 0.25美元，降幅75%

Anthropic released Fable 5.1 and Mythos 5.1. Fable 5.1 achieves first place on eight public benchmarks and reduces cache read pricing by up to 75%. The update also introduces an anti-distillation mechanism that prevents manual editing of context in multi-turn dialogues while preserving chain-of-thought records.

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